Dynamic content is the right direction to further develop the page builder.
Now you have done a really great job and implemented quite a bit.
From my perspective, you have neglected the essential part.
The users who are supposed to work with it!
Because it gives the users the ability to easily add new content. Just like a form. But there is no simple UI for them!
As a super admin, you have to struggle with the permissions in Joomla so that users can manage when they log in to the backend. Afterwards, the user still sees far too much, so they are still overwhelmed.
Dynamic content needs a simple UI in the frontend, so that a user can log in there and enter their content just like filling out a form. And if it should be a bit more, they can see the result directly while editing. That would be nice to have.